Jade-like glaze, ceramic tile and preparation method thereof

Abstract

The present application provides a jade-like glaze, a ceramic tile, and a preparation method thereof, relating to the technical field of ceramic tiles. The jade-like glaze comprises a jade-like protective glaze and a jade-like surface glaze, wherein the jade-like protective glaze comprises the following mineral raw materials in parts by weight: kaolin, ball clay, black soil, nepheline, talc, zirconium oxide, pyrophyllite, zinc oxide, and strontium carbonate; the jade-like surface glaze comprises: petalite, quartz, bauxite, Suzhou soil, zircon sand, and limestone. The ceramic tile comprises a stacked brick layer, a jade-like surface glaze layer, and a jade-like protective glaze layer; wherein the jade-like surface glaze layer and the jade-like protective glaze layer are prepared using the jade-like glaze as raw material. The preparation method of the ceramic tile comprises: sequentially applying the jade-like surface glaze slurry and the jade-like protective glaze slurry on the surface of the brick, firing in a kiln, and obtaining the ceramic tile. By optimizing the surface glaze formula and then combining it with the jade-like protective glaze, the present application makes the glaze surface of the fired ceramic tile warm and soft, with a strong jade texture.

Description

Technical Field

[0001] The present application relates to the technical field of ceramic tiles, and in particular to a jade-like glaze, a ceramic tile and a preparation method thereof. Background Art

[0002] With the rise of the younger generation of consumers, especially those born after 1990, who have gradually become the main force of market consumption, in the field of home decoration ceramic tiles, the low light feeling, skin touch and simple and plain design of tiles have become the new popular trend of tiles.

[0003] Compared with traditional matte glaze, jade glaze has a higher sense of transparency and is more popular among young people. In traditional matte glaze or low-gloss glaze ceramic tiles, the metal oxides (such as Ca, Mg, Al, etc.) in the chemical composition will crystallize after firing, resulting in poor transparency; and because of the crystallization of the glaze layer, the glaze crystal structure of matte glaze or low-gloss glaze ceramic tiles is relatively dense, so the air permeability is also poor, which easily causes common prickly heat defects in ceramic tiles, thereby affecting the texture of the glaze. Compared with matte glaze and low-gloss glaze, jade glaze has a softer brightness and a strong sense of transparency. After firing, the glaze of ceramic tiles has a delicate texture like natural jade, which is more in line with consumers' aesthetics. Therefore, in order to meet the needs of consumers, it is necessary to develop a new type of ceramic tile with jade glaze as the glaze. Summary of the Invention

[0004] The purpose of this application is to provide a jade-like glaze, ceramic tile and its preparation method, by optimizing the formula of the surface glaze layer and the protective glaze layer at the same time, so that the fired ceramic tile has a strong jade texture.

[0005] To achieve the above objectives, the technical solutions of this application are as follows:

[0006] The present application provides a glaze material for jade glaze, including jade protective glaze and jade surface glaze, wherein the jade protective glaze comprises the following mineral raw materials in parts by weight: 15-20 parts of kaolin, 10-16 parts of ball clay, 12-16 parts of black soil, 8-14 parts of nepheline, 7-12 parts of talc, 6-15 parts of zirconium oxide, 2-6 parts of pyrophyllite, 3-6 parts of zinc oxide, and 1-3 parts of strontium carbonate;

[0007] The jade-like glaze comprises the following mineral raw materials in parts by weight: 22-33 parts of petalite, 14-20 parts of quartz, 20-31 parts of bauxite, 6-11 parts of Suzhou soil, 11-19 parts of zircon sand and 1-4 parts of limestone.

[0008] The present application also provides a ceramic tile, comprising a brick layer, a jade surface glaze layer and a jade protective glaze layer stacked in sequence;

[0009] The jade surface glaze layer and the jade protective glaze layer are prepared by using the above-mentioned jade glaze material as raw materials.

[0010] The method for preparing the ceramic tile comprises:

[0011] Mixing the mineral raw materials of the jade glaze with water according to the formula to obtain jade glaze slurry;

[0012] Mixing the mineral raw materials of the jade protective glaze with water according to the formula to obtain a jade protective glaze slurry;

[0013] The jade surface glaze slurry and the jade protective glaze slurry are sequentially applied on the surface of the brick, and the brick is fired in a kiln to obtain the ceramic brick.

[0014] Preferably, the method for preparing the jade-like glaze slurry comprises:

[0015] Mixing the mineral raw materials of the jade glaze according to the formula to obtain a jade glaze mixture;

[0016] Sodium hydroxymethyl cellulose, sodium tripolyphosphate, zirconium silicate and water are added to the jade glaze mixture, and the mixture is subjected to first ball milling, sieving and iron removal to obtain the jade glaze slurry.

[0017] Preferably, 0.2-0.3 g of sodium hydroxymethyl cellulose, 0.3-0.4 g of sodium tripolyphosphate, 9-11 g of sodium silicate and 38-42 g of water are added to every 100 g of the jade glaze mixture;

[0018] After the first ball milling and sieving, the sieve residue is 0.3-0.6 g / 100 g / 325 mesh.

[0019] Preferably, the method for preparing the jade-like protective glaze slurry comprises:

[0020] Mixing the mineral raw materials of the jade protective glaze according to the formula to obtain a jade protective glaze mixture;

[0021] Sodium hydroxymethyl cellulose, sodium tripolyphosphate and water are added to the jade-like protective glaze mixture, and then a second ball milling, screening and iron removal are performed to obtain the jade-like protective glaze slurry.

[0022] Preferably, 0.1-0.2 g of sodium hydroxymethyl cellulose, 0.4-0.5 g of sodium tripolyphosphate and 35-40 g of water are added to every 100 g of the jade protective glaze mixture;

[0023] After the second ball milling and sieving, the sieve residue is 0.3-0.55 g / 100 g / 325 mesh.

[0024] Preferably, the specific gravity of the jade glaze slurry is 1.85-1.90;

[0025] The specific gravity of the jade protective glaze slurry is 1.25-1.3.

[0026] Preferably, the method for preparing the ceramic tile further satisfies at least one of the following conditions:

[0027] a. Before applying the jade glaze slurry, the steps include: maintaining the temperature of the brick at 85-105°C, spraying water on the surface of the brick, spraying water at a rate of 8-15g / plate, wherein the size of each plate is 33cm×66cm;

[0028] b. When applying the jade glaze slurry, the glazing method used includes pouring glaze, and the pouring glaze amount is 100-120g / pan;

[0029] c. After applying the jade surface glaze slurry and before applying the jade protective glaze slurry, the method further comprises: subjecting the ceramic tile after the application to a first drying treatment, and then maintaining the temperature of the brick blank at 50-65°C;

[0030] d. The first drying process is performed at a temperature of 100-110°C for 8-10 minutes;

[0031] e. When applying the jade protective glaze slurry, the glazing method used includes spray glaze, and the spray glaze amount is 55-65g / pan;

[0032] f. After applying the jade protective glaze slurry, further comprising: performing a second drying process on the ceramic tile before firing in the kiln;

[0033] g. The temperature of the second drying treatment is 110-150°C and the time is 10-15min.

[0034] Preferably, the firing temperature in the kiln is 1155-1175° C., and the firing time is 45-55 minutes.

[0035] Beneficial effects of this application:

[0036] The glaze of the jade glaze of the present application can improve the brightness of the glaze by combining a jade surface glaze and a jade protective glaze. At high temperature, the glaze of the jade glaze spreads to form a complete smooth surface, which improves the glossiness, makes the glaze surface obtain high mirror reflection, and improves the color effect. The zinc oxide added to the glaze of the jade protective glaze has a strong fluxing effect, which can reduce the expansion coefficient of the protective glaze and improve the thermal stability of the product. At the same time, it can increase the gloss and transparency of the glaze surface, improve the elasticity of the glaze, and make the jade protective glaze feel flatter. In addition, the zinc element can enhance the color effect of the ink layer. The added strontium carbonate can solve the crystallization problem caused by the addition of barium carbonate in traditional glazes, which leads to uneven reflection of the glaze surface after firing. At the same time, strontium carbonate can also improve the baking and abrasion resistance of the glaze, and the color is firm, bright and stable.

[0037] The ceramic tiles of the present application solve the problems of poor transparency and color difference caused by low glaze glossiness of similar glazes by combining jade surface glaze and jade protective glaze. At the same time, the glaze surface of the ceramic tiles after firing between the two layers of glaze is warm and soft, with a strong jade texture.

[0038] The preparation method of the ceramic tiles of the present application has simple process, strong operability, and can be used for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope of the present invention.

[0040] Figure 1 This is a schematic diagram of the appearance of the ceramic tile prepared in Example 1. DETAILED DESCRIPTION

[0041] As used herein:

[0042] "Prepared from" is synonymous with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variations thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0043] The conjunction "consisting of" excludes any unspecified element, step, or component. If used in a claim, this phrase renders the claim closed, excluding materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of" appears in a clause of the body of a claim, rather than immediately following the subject matter, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0044] When an amount, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper preferred values ​​and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value with any range lower limit or preferred value, regardless of whether the range is disclosed alone. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted as including the range "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5", etc. When a numerical range is described herein, unless otherwise stated, the range is intended to include its end values ​​and all integers and fractions within the range.

[0045] In these examples, parts and percentages are by mass unless otherwise indicated.

[0046] "Parts by mass" refers to the basic unit of measurement used to express the mass ratio of multiple components. One part can represent any unit of mass, such as 1g or 2.689g. If we say that the mass of component A is a parts and the mass of component B is b parts, this means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, we could say that the mass of component A is aK and the mass of component B is bK (K is an arbitrary number representing a multiplication factor). It's important to note that, unlike parts by mass, the sum of the mass of all components is not limited to 100 parts.

[0047] "And / or" is used to indicate that one or both of the stated situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0048] The present application provides a jade glaze material, which includes a jade protective glaze and a jade surface glaze.

[0049] The jade-like protective glaze comprises the following mineral raw materials in parts by weight:

[0050] 15-20 parts of kaolin, for example, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts or any value between 15-20 parts;

[0051] 10-16 parts of ball clay, for example, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts or any value between 10-16 parts;

[0052] 12-16 parts of black soil, for example, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts or any value between 12-16 parts;

[0053] 8-14 parts of nepheline, for example, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts or any value between 8-14 parts;

[0054] 7-12 parts of talc, for example, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts or any value between 7-12 parts;

[0055] 6-15 parts of zirconium oxide, for example, 6 parts, 8 parts, 10 parts, 12 parts, 13 parts, 15 parts or any value between 6-15 parts;

[0056] 2-6 parts of pyrophyllite, for example, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts or any value between 2-6 parts;

[0057] 3-6 parts of zinc oxide, for example, 3 parts, 4 parts, 5 parts, 6 parts or any value between 3-6 parts;

[0058] The amount of strontium carbonate is 1-3 parts, for example, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts or any value between 1-3 parts.

[0059] It should be noted that zinc oxide has a strong fluxing effect in the glaze, which can reduce the expansion coefficient of the glaze, improve the thermal stability of the product, increase the gloss and transparency of the glaze, and improve the elasticity of the glaze, making the firing smoothness of the jade glaze better, and increasing the color of the jade glaze while expanding the melting range.

[0060] Strontium carbonate improves the hardness, abrasion resistance, and chemical corrosion resistance of tile glazes. It also reduces pores and bubbles, improves the translucency of the glaze, expands the firing range, and increases the thermal expansion coefficient. Using strontium carbonate as a glaze component can address the crystallization problem caused by the addition of barium carbonate to traditional glazes, which results in uneven glaze reflection after firing. Strontium carbonate also improves the glaze's baking and abrasion resistance, resulting in a durable, bright, and stable color.

[0061] The jade-like glaze comprises the following mineral raw materials in parts by weight: 22-33 parts of petalite, for example, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 32 parts, 33 parts or any value between 22-33 parts;

[0062] 14-20 parts of quartz, for example, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts or any value between 14-20 parts;

[0063] 20-31 parts of bauxite, for example, 20 parts, 22 parts, 24 parts, 26 parts, 28 parts, 30 parts, 31 parts or any value between 20-31 parts;

[0064] Suzhou soil 6-11 parts, for example, can be 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts or any value between 6-11 parts;

[0065] 11-19 parts of zircon sand, for example, 11 parts, 13 parts, 15 parts, 17 parts, 19 parts or any value between 11-19 parts;

[0066] The amount of limestone is 1-4 parts, for example, it can be 1 part, 2 parts, 3 parts, 4 parts or any value between 1-4 parts.

[0067] The present application also provides a ceramic tile, comprising a brick layer, a jade surface glaze layer and a jade protective glaze layer stacked in sequence; wherein the jade surface glaze layer and the jade protective glaze layer are prepared using the above-mentioned jade glaze as raw material.

[0068] The method for preparing the ceramic tile comprises:

[0069] S1. The mineral raw materials of the jade glaze are mixed with water according to the formula to obtain a jade glaze slurry;

[0070] S2. The mineral raw materials of the jade protective glaze are mixed with water according to the formula to obtain a jade protective glaze slurry;

[0071] S3. Apply the jade surface glaze slurry and the jade protective glaze slurry on the surface of the brick in sequence, put it into the kiln for firing, and obtain the ceramic brick.

[0072] In a preferred embodiment, the specific preparation method of the jade glaze slurry of S1 includes: mixing the mineral raw materials of the jade glaze according to the formula to obtain a jade glaze mixture; then adding sodium hydroxymethyl cellulose, sodium tripolyphosphate, zirconium silicate and water to the jade glaze mixture, performing a first ball milling, screening and iron removal to obtain the jade glaze slurry.

[0073] Specifically, 0.2-0.3 g of sodium hydroxymethyl cellulose, 0.3-0.4 g of sodium tripolyphosphate, 9-11 g of sodium silicate and 38-42 g of water are added to every 100 g of the jade glaze mixture.

[0074] More preferably, 0.23 g of sodium hydroxymethyl cellulose, 0.32 g of sodium tripolyphosphate, 10 g of sodium silicate and 40 g of water are added to every 100 g of the jade glaze mixture.

[0075] Furthermore, after the first ball milling and sieving, the mass of the residue of each 100g of the jade glaze mixture passing through a 325-mesh sieve after washing and drying is 0.3-0.6g, for example, it can be 0.3g, 0.4g, 0.5g, 0.6g or any value between 0.3-0.6g.

[0076] In a preferred embodiment, the specific preparation method of the jade protective glaze slurry of S2 includes: mixing the mineral raw materials of the jade protective glaze according to the formula amount to obtain a jade protective glaze mixture; then adding sodium hydroxymethyl cellulose, sodium tripolyphosphate and water to the jade protective glaze mixture, and then performing a second ball milling, screening and iron removal to obtain the jade protective glaze slurry.

[0077] Specifically, 0.1-0.2 g of sodium hydroxymethyl cellulose, 0.4-0.5 g of sodium tripolyphosphate and 35-40 g of water are added to every 100 g of the jade protective glaze mixture.

[0078] More preferably, 0.16 g of sodium hydroxymethyl cellulose, 0.45 g of sodium tripolyphosphate and 38 g of water are added to every 100 g of the jade protective glaze mixture.

[0079] Furthermore, after the second ball milling and screening, the mass of the residue passing through the 325-mesh sieve in every 100 g of jade protective glaze slurry after washing and drying is 0.3-0.55 g, for example, it can be 0.3 g, 0.35 g, 0.4 g, 0.45 g, 0.5 g, 0.55 g or any value between 0.3-0.55 g.

[0080] In a preferred embodiment, the specific gravity of the jade surface glaze slurry in S1 is 1.85-1.90, for example, it can be 1.85, 1.86, 1.87, 1.88, 1.89, 1.90 or any value between 1.85 and 1.90; the specific gravity of the jade protective glaze slurry in S2 is 1.25-1.3, for example, it can be 1.25, 1.26, 1.27, 1.28, 1.29, 1.0 or any value between 1.25 and 1.3.

[0081] In a preferred embodiment, before applying the jade-like surface glaze slurry, S3 includes: maintaining the temperature of the brick blank at 85-105°C, spraying water on the surface of the brick blank, and spraying water in an amount of 8-15g / plate, wherein the standard glaze plate has a size of 33cm×66cm.

[0082] In a preferred embodiment, when applying the jade-like glaze slurry, the glazing method used includes pouring glaze, and the glazing amount is 100-120g / plate, for example, it can be 100g / plate, 110g / plate, 120g / plate or any value between 100-120g / plate, wherein the standard size of the glaze plate is also 33cm×66cm.

[0083] In a preferred embodiment, after applying the jade surface glaze slurry and before applying the jade protective glaze slurry, the process further includes: subjecting the ceramic tiles after the application to a first drying treatment, and then maintaining the temperature of the bricks between 50-65°C.

[0084] Further preferably, the temperature of the first drying treatment is 100-110°C, for example, it can be 100°C, 105°C, 110°C or any value between 100-110°C, and the drying treatment time is 8-10min, for example, it can be 8min, 9min, 10min or any value between 8-10min.

[0085] In a preferred embodiment, when applying the jade protective glaze slurry, the glazing method used includes spraying glaze, and the spraying amount of the sprayed glaze is 55-65g / dish, wherein the standard size of the glaze dish is also 33cm×66cm.

[0086] In a preferred embodiment, after applying the jade-like protective glaze slurry, the method further comprises: performing a second drying treatment on the ceramic tiles before firing in the kiln.

[0087] Further preferably, the temperature of the second drying treatment is 110-150°C, for example, it can be 110°C, 120°C, 130°C, 140°C, 150°C or any value between 110-150°C, and the time is 10-15min, for example, it can be 10min, 11min, 12min, 13min, 14min, 15min or any value between 10-15min.

[0088] In a preferred embodiment, the firing temperature in the kiln is 1155-1175°C, for example, it can be 1155°C, 1160°C, 1165°C, 1170°C, 1175°C or any value between 1155-1175°C, and the firing time is 45-55min, for example, it can be 45min, 48min, 50min, 52min, 55min or any value between 45-55min.

[0089] The embodiments of the present invention will be described in detail below with reference to specific examples, but those skilled in the art will appreciate that the following examples are intended only to illustrate the present invention and should not be construed as limiting the scope of the present invention. Where specific conditions are not specified in the examples, the methods were performed according to conventional conditions or the conditions recommended by the manufacturer. Where the manufacturers of the reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0090] Example 1

[0091] The glaze of the jade glaze of this embodiment includes a jade protective glaze and a jade surface glaze. The raw materials of the jade protective glaze, in parts by weight, include: kaolin: 15.6 parts, ball clay: 15.1 parts, black soil: 12.3 parts, nepheline: 13.7 parts, talc: 7.4 parts, zirconium oxide: 14.2 parts, pyrophyllite: 2.1 parts, zinc oxide: 5.2 parts, and strontium carbonate: 1.3 parts;

[0092] The raw materials of the jade glaze, calculated by weight, include: 22.2 parts of petalite, 19.4 parts of quartz, 20.1 parts of bauxite, 10.5 parts of Suzhou soil, 11.7 parts of zircon sand, and 3.1 parts of limestone.

[0093] This embodiment provides a ceramic tile, including a brick layer, a jade-like surface glaze layer, and a jade-like protective glaze layer. The specific preparation method includes:

[0094] (1) The raw materials of the jade glaze in this embodiment are mixed with sodium hydroxymethyl cellulose, sodium tripolyphosphate, zirconium silicate and water according to the formula to obtain a jade glaze slurry, wherein 0.23 g of sodium hydroxymethyl cellulose, 0.32 g of sodium tripolyphosphate, 10 g of sodium silicate and 40 g of water are added to every 100 g of the jade glaze mixture;

[0095] (2) The raw materials of the jade protective glaze in this embodiment are mixed with sodium hydroxymethyl cellulose, sodium tripolyphosphate and water according to the formula amount to obtain a jade protective glaze slurry, wherein 0.16 g of sodium hydroxymethyl cellulose, 0.45 g of sodium tripolyphosphate and 38 g of water are added to every 100 g of the jade protective glaze mixture;

[0096] (3) Apply jade glaze slurry on the surface of the brick with a body temperature of about 90°C by spraying glaze, with a glaze amount of 100g / plate; then dry at 100°C for 10 minutes, and then continue to control the body temperature to about 60°C, and use a high-pressure glaze spray cabinet to spray the jade protective glaze slurry onto the surface of the jade glaze layer, with a glaze spray amount of 60g / plate; then dry at 120°C for 15 minutes, put into the kiln for firing, the firing temperature is 1175°C, the time is 50 minutes, and the ceramic brick is obtained after cooling, wherein the glaze plate specification is: 33×66㎝.

[0097] Example 2

[0098] The glaze of the jade glaze of this embodiment includes a jade protective glaze and a jade surface glaze. The raw materials of the jade protective glaze, in parts by weight, include: kaolin: 19.3 parts, ball clay: 10.2 parts, black soil: 15.5 parts, nepheline: 8.1 parts, talc: 11.6 parts, zirconium oxide: 6.2 parts, pyrophyllite: 5.4 parts, zinc oxide: 3.3 parts, and strontium carbonate: 2.6 parts;

[0099] The raw materials of the jade glaze, calculated by weight, include: 32.6 parts of petalite, 14.4 parts of quartz, 30.3 parts of bauxite, 6.2 parts of Suzhou soil, 18.5 parts of zircon sand, and 1.6 parts of limestone.

[0100] This embodiment provides a ceramic tile, and the specific preparation method is the same as that of Example 1.

[0101] Example 3

[0102] The glaze of the jade glaze of this embodiment includes a jade protective glaze and a jade surface glaze. The raw materials of the jade protective glaze, in parts by weight, include: kaolin: 16.6 parts, ball clay: 13.2 parts, black soil: 14.7 parts, nepheline: 11.5 parts, talc: 9.1 parts, zirconium oxide: 12.3 parts, pyrophyllite: 4.4 parts, zinc oxide: 4.3 parts, and strontium carbonate: 1.2 parts;

[0103] The raw materials of the jade glaze, calculated by weight, include: 25.7 parts of petalite, 16.5 parts of quartz, 14.2 parts of bauxite, 8.3 parts of Suzhou soil, 16.4 parts of zircon sand, and 2.2 parts of limestone.

[0104] This embodiment provides a ceramic tile, and the specific preparation method is the same as that of Example 1.

[0105] Comparative Example 1

[0106] The jade glaze of this comparative example includes a jade protective glaze. The raw materials of the jade protective glaze, in parts by weight, include: 16.6 parts of kaolin, 13.2 parts of ball clay, 14.7 parts of black soil, 11.5 parts of nepheline, 9.1 parts of talc, 12.3 parts of zirconium oxide, 4.4 parts of pyrophyllite, 4.3 parts of zinc oxide, and 1.2 parts of strontium carbonate.

[0107] This comparative example provides a ceramic tile comprising a green layer, a top glaze layer, and a jade-like protective glaze layer. The specific preparation method is the same as in Example 1, except that the top glaze layer is applied with a conventional top glaze slurry. The raw materials for the top glaze, in parts by weight, include: 10 parts potassium feldspar, 25 parts sodium feldspar, 35 parts ultrafine corundum powder, 8 parts dolomite, 5 parts wollastonite, 8 parts calcined talc, 5 parts kaolin, and 5 parts nepheline.

[0108] Comparative Example 2

[0109] The jade glaze of this comparative example includes a jade top glaze, wherein the raw materials of the jade top glaze include, by weight, 25.7 parts of petalite, 16.5 parts of quartz, 14.2 parts of bauxite, 8.3 parts of Suzhou clay, 16.4 parts of zircon sand, and 2.2 parts of limestone.

[0110] This comparative example provides a ceramic tile comprising a green brick layer, a jade-like surface glaze layer, and a protective glaze layer. The specific preparation method is the same as in Example 1, except that the protective glaze layer is applied with a transparent protective glaze slurry. The raw materials for the transparent protective glaze, in parts by weight, include: 5 parts zinc oxide, 10 parts potassium feldspar, 20 parts sodium feldspar, 3 parts ultrafine corundum powder, 5 parts calcite, 5 parts wollastonite, 7 parts kaolin, and 45 parts frit. The raw materials for the frit include: 30 parts kaolin, 10 parts corundum powder, 10 parts quartz, 3 parts zircon powder, 35 parts calcined talc, 10 parts potassium feldspar, 18 parts calcite, 8 parts zinc oxide, and 5 parts borax.

[0111] The glossiness of the ceramic tiles of Examples 1-3 and Comparative Examples 1-2 was tested. The tactile properties of the different ceramic tiles were measured by touching the ceramic glaze surfaces, as shown in Table 1. Five samples from each example were tested using a gloss meter to obtain the glossiness test results.

[0112] Table 1

[0113]

[0114] Figure 1 The schematic diagram of the appearance of the ceramic tile prepared in Example 1 is provided. It is clear that the ceramic tile of the present application has a certain glossiness, and the glaze is warm and soft, with a jade-like texture. The test results in Table 1 show that the ceramic tile of Example 2 has a smooth touch, like the touch of skin, while the ceramic tile of Comparative Example 2 has a greasy touch, specifically a slightly greasy and sticky feel. The glaze of jade-like glaze can be distinguished from the glaze of ordinary ceramic tiles through human touch.

[0115] In Comparative Examples 1 and 2, because the jade-like surface glaze and jade-like protective glaze of the present application were not used simultaneously, the ceramic tiles prepared either had a low gloss due to the poor transparency of the surface glaze layer, or had an excessively high gloss of the transparent protective glaze layer, making it difficult to achieve a warm and jade-like glaze surface. This further demonstrates that the combination of the jade-like surface glaze and the jade-like protective glaze in the ceramic tiles of the present application solves the problems of poor transparency and color development caused by the low glossiness of the glaze surface of similar glazes. At the same time, the glaze surface of the fired ceramic tiles is warm and soft, with a strong jade-like texture.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0117] Furthermore, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is intended solely to enhance understanding of the overall background of the present invention and should not be construed as an admission or any form of implication that such information constitutes prior art known to those skilled in the art.

Claims

1. A ceramic tile, characterized in that: It comprises a brick layer, a jade surface glaze layer and a jade protective glaze layer which are stacked in sequence; The jade surface glaze layer and the jade protective glaze layer are prepared from jade glaze glaze as raw materials; The glaze material of the jade glaze includes jade protective glaze and jade surface glaze; The jade-like protective glaze comprises the following mineral raw materials in parts by weight: 15-20 parts of kaolin, 10-16 parts of ball clay, 12-16 parts of black soil, 8-14 parts of nepheline, 7-12 parts of talc, 6-15 parts of zirconium oxide, 2-6 parts of pyrophyllite, 3-6 parts of zinc oxide and 1-3 parts of strontium carbonate; The jade-like glaze comprises the following mineral raw materials in parts by weight: 22-33 parts of petalite, 14-20 parts of quartz, 20-31 parts of bauxite, 6-11 parts of Suzhou soil, 11-19 parts of zircon sand and 1-4 parts of limestone.

2. A method for preparing the ceramic tile according to claim 1, characterized in that: include: Mixing the mineral raw materials of the jade glaze with water according to the formula to obtain jade glaze slurry; Mixing the mineral raw materials of the jade protective glaze with water according to the formula to obtain a jade protective glaze slurry; The jade surface glaze slurry and the jade protective glaze slurry are sequentially applied on the surface of the brick, and the brick is fired in a kiln to obtain the ceramic brick.

3. The preparation method according to claim 2, wherein The method for preparing the jade-like glaze slurry comprises: Mixing the mineral raw materials of the jade glaze according to the formula to obtain a jade glaze mixture; Sodium hydroxymethyl cellulose, sodium tripolyphosphate, zirconium silicate and water are added to the jade glaze mixture, and the mixture is subjected to first ball milling, sieving and iron removal to obtain the jade glaze slurry.

4. The preparation method according to claim 3, wherein To every 100g of the jade glaze mixture, add 0.2-0.3g of sodium hydroxymethylcellulose, 0.3-0.4g of sodium tripolyphosphate, 9-11g of sodium silicate and 38-42g of water; After the first ball milling and sieving, the sieve residue is 0.3-0.6 g / 100 g / 325 mesh.

5. The preparation method according to claim 2, wherein The method for preparing the jade-like protective glaze slurry comprises: Mixing the mineral raw materials of the jade protective glaze according to the formula to obtain a jade protective glaze mixture; Sodium hydroxymethyl cellulose, sodium tripolyphosphate and water are added to the jade-like protective glaze mixture, and then a second ball milling, screening and iron removal are performed to obtain the jade-like protective glaze slurry.

6. The preparation method according to claim 5, wherein To every 100g of the jade protective glaze mixture, add 0.1-0.2g of sodium hydroxymethyl cellulose, 0.4-0.5g of sodium tripolyphosphate and 35-40g of water; After the second ball milling and sieving, the sieve residue is 0.3-0.55 g / 100 g / 325 mesh.

7. The preparation method according to claim 2, wherein The specific gravity of the jade glaze slurry is 1.85-1.90; The specific gravity of the jade protective glaze slurry is 1.25-1.

3.

8. The preparation method according to claim 2, wherein At least one of the following conditions is met: a. Before applying the jade glaze slurry, the steps include: maintaining the temperature of the brick at 85-105°C, spraying water on the surface of the brick, spraying water at a rate of 8-15g / plate, wherein the size of each plate is 33cm×66cm; b. When applying the jade glaze slurry, the glazing method used includes pouring glaze, and the pouring glaze amount is 100-120g / pan; c. After applying the jade surface glaze slurry and before applying the jade protective glaze slurry, the method further comprises: subjecting the ceramic tile after the application to a first drying treatment, and then maintaining the temperature of the brick blank at 50-65°C; d. The first drying process is performed at a temperature of 100-110°C for 8-10 minutes; e. When applying the jade protective glaze slurry, the glazing method used includes spray glaze, and the spray glaze amount is 55-65g / pan; f. After applying the jade protective glaze slurry, further comprising: performing a second drying process on the ceramic tile before firing in the kiln; g. The temperature of the second drying treatment is 110-150°C and the time is 10-15min.

9. The preparation method according to any one of claims 2 to 8, wherein The firing temperature of the kiln is 1155-1175° C., and the firing time is 45-55 minutes.

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